document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1069755>Question 1069755</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the linear system using substitution. <BR>\n" );
document.write( "4x-y=5<BR>\n" );
document.write( "4x+4y=-4\r<BR>\n" );
document.write( "\n" );
document.write( "Solve the linear system above^^ using elimination. <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #684908 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=684908\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve the linear system using substitution. <BR>\n" );
document.write( "4x-y=5 --> y = 4x - 5<BR>\n" );
document.write( "4x+4y=-4 --> x + y = -1<BR>\n" );
document.write( "=========<BR>\n" );
document.write( "x + y = -1<BR>\n" );
document.write( "Sub for y<BR>\n" );
document.write( "x + (4x-5) = -1<BR>\n" );
document.write( "5x = 4<BR>\n" );
document.write( "x = 4/5<BR>\n" );
document.write( "y = -9/5<BR>\n" );
document.write( "=====================<BR>\n" );
document.write( "Elimination is better for this system:<BR>\n" );
document.write( "4x-y = 5 <BR>\n" );
document.write( "4x+4y=-4<BR>\n" );
document.write( "------------------ Subtract<BR>\n" );
document.write( "-5y = 9<BR>\n" );
document.write( "y = -9/5<BR>\n" );
document.write( "etc </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );